Answer:
1.9976 m
Explanation:
An iron bar whose initial length is 2m has its temperature increased from 20 ° C to 120 ° C. What is the final length of the bar? (consider that the coefficient of expansion of iron) is 1.2 x 10-5 1 / ° C (3 points)
Given that,
Initial length of an iron bar,
The temperature increased from 20°C to 120°C
The coefficient of expansion of iron is
We need to find the final length of the bar.
The linear expansion equation is given by :
Where is the change in length
Also,
L is final length
So, the final length of the bar is 1.9976 m
